Shoe and slipper lasting machine



7 1,622,929 E. TWEEDALE ET L snob: AND SLIPPER LASIING MAGHiNE March 29 1927.

Filed Feb. 5 1925 4 Sheets-Sheet 1 March 29 1927.

E. TWEEDALE ET AL SHOE AND SLIPPER LASTING MACHINE Filed Feb. 3. 1925 4 Sheets-Shem: 2

March 29 1927.

E. TWEEDALE ET AL SHOE AND SLIPPER LASTING MACHINE Filed Feb. 5 1925 4 Shee ts-Sheet 5 fi Ill w m lllllr I .m a 2:] L n F h March 29 1927. 1,622,929

E. TWEEDALE ET AL saos AND SLIPPER LASTING momma Filed Feb. s, 1925 I 4 Sheets-Shee t 4 Patented Mar. 29, 1927.

UNITED STATES PATENT OFFICE.

SHOE AND SLIPPER LASTING MACHINE.

Application filed February 3, 1925, Serial No. 6,627,.and in Great Britain February 29, 1924.

This invention has for its object to provide a machine by which shoe and slipper uppers can be readily and economically secured to slipper insoles in an expeditious manner. 2

Our invention comprises the improved combinations and arrangements of parts hereinafter described.

Referring to the accompanying explanatory drawings Figure 1 is a side elevation partly in section of the lower part of a lasting machine constructed in one convenient form in accordance with our invention and Figure 2 F is a similar view of the upper part of the machine, the two figures showing the machine.

Figures 3 and 4 are views similar to Figures 1 and 2, but showing a front elevation of the machine.

Figure 5 is a detail sectional view on the line A B of Figure 1.

Figure 6 is a part plan view and part sectional plan view of a complete set of wipers when in their closed position pressing the edge of an upper over an insole upon a last. The position of the section is approximately the line C D of Figure 7.

Figure 7 is a view of a side wiper partly in se ction on the irregular line E F of Figure 6.

Figure 8 is a cross sectional view on the line G H of Figure 6 showing a side Wiper.

Figure 9 is an elevation of the heel wiper partly in section on the line I J of Figure 6.

Figure 10 is a cross sectional view of the heel wiper on the line K M of Figure (3.

Figure 11 is an elevation of the toe wiper partly in section on the line N O of Figure 6.

Figure 12 is a cross sectional view of the heel wiper on the line P Q, of Figure 6.

The same reference letters in the different views indicate the same parts.

In one convenient application of our inr vention, the shoe or slipper (hereinafter termed slipper) last is carried in a stand 3 by two supports, one a for the heel and one I) for the toe, which are adjustable in position The said stand 3 can be raised by suitable means operated to suit the size of last.

from a foot treadle 0. In the form illus trated, the last stand 3 is carried by a stem d at the lower end of which is a roller 6 adapted to ride upon a rack 7 having an inr clined edge at one end. The rack f is traversed by a flexible connection h from a bar 1} which is engaged by the treadle 0 during the first portion of the downward movement of the latter but is released therefrom during the latter part of such downward movement by the stop j with which the part is on the bar 2' engages as thebar is lowered. The end of the bar is hook shaped as shown at m and such end passes through a slot n in the treadle lever 0 when the latter is raised. It will be seen therefore that the lever 0 draws the bar 5 down with it by means of the book we until the said hook is released from the lever by the stop 7'. A flexible connection a between a treadle p and wheel 79 on a shaft 22' carrying a pinion 0 meshing with the rack f (see Figure 5) serves to lower the rack f and so the last stand 3 when the operation on the slipper is completed. 7

The inclined edge 9 of the rack f serves, when operated by the bar z and connection 7 h, to raise the stem (Z and stand 3 but any further movement of the rack after the roller 6 has mounted said edge does not cause a further lifting movement of the stand 3.

We preferably provide four wiper-like elements 9, r, s, t, for drafting the upper upon the lastand for pressing the upper with sufficient pressure upon the insole to which adhesive has been applied, to ensure the securing of the two together. One wiper 9 acts at the toe, one 1* at the heel and two 8, t at opposite sides. 3

Figures 7 and 8 show theconstruction of one of the side wipers. There is a shaped lower portion a adapted to draw the upper tightly around the last and insole and an upper portion o, a series of coil springs Q0 being arranged around studs 00 which screw into the lower portion a and slide freely through apertures in the upper portion 4). Some of the springs to are omitted for the sake of clearness. The upper portion o is hingedly connected to a slotted member y adapted to be secured upon a correspondingly shaped part 2 (see Figure 2) secured to a bracket 4 upon a lever 5. The parts 3 are slidable upon the parts a for adjustment purposes and are locked by studs 2 The lever 5 is adapted to be oscillated about its fulcrum 6 by parallel links 20, a lever 21 fulcrumed at 22, a link 23 and slide 14, as shown, from a link 7 movable vertically by the handlelever 8. It will be understood that the wipers for the opposite sides of the slipper are similar and are similarly operated. In Figure 1, one part 2 is shown in full lines in the position it occupies when the upper is being held upon the insole after drafting or lasting is completed and the other part 2 is shown in dotted lines in the position it occupies at the commencement of drafting. The springs to allow the lower part a of the wiper'to yield \vhenit is drafting or lasting the upper so that a resilient pressure is exerted during suchoperation. After drafting o'r lasting is completed, each side wiper comes on to the top of the last, due to the positioning of theparts, when a downward pressure is exerted by the springs 20 holding the edge of the upper on to the gummed insole. The parts 1) and 12 are ad jus'ted about their fulcrum 10 to suit the conditions of working and locked by the'bolt 9 with nuts thereon as shown. u

The heel wiper is shown at Figures 9 and 10 and the toe wiper at Figures 11 and 12. In each case, the wiper comprises two ,parts movable towards one another against spring pressure and pivotally carried on a part about which the wiper can be turned for adjustment purposes. The parts in 'Figures 9 to 12 have been lettered to correspond with the similar parts in Figures 7 and 8.

In the case of the heel and toe wipers, the parts 3/ are adjustable upon'the parts a which are carried by slides 12 1novable by the levers 19 and links 13 from the sliding bracket lat operated by the handle lever 8 through the links 7. In Figure 2 one'slide 12 is shownin its inner and one in'its outer position. The heel wiper is omitted from Figure 2. y p

Each of the parts y is adjustably mounted upon the part 2 so that the wiper can "be set to suit the size of slipper being produced. I

The handle lever 8 actuates the wipers through the links 7, slide 14, links 13 and 23, levers 131, 1'9 and 5, as shown, which have a toggle action. As the wipers come to their final position in which they press down upon the edge of the upper, the levers and links become self locki'ng so that the lever 8 need not exert any downward pressure to maintain them in their final position.

The downward movement of the lever 8 to bring the wipers into operation is effected by the treadle 0 through the connecting rod 15 connected to the arm 16 fulcrumed at 17 and the connecting rod 18. The release of the wipers is not effected by the treadle 0 but by raising the leverS by hand. The lowering of the stand 8 also is not effected by the treadle 0 but by the foot lever p as before explained.

In operation, the last with the insole and upper thereon is placed in the machine upon the last stand 3. The treadle c is depressed when the last stand is raised. The wipers commence to move inwards under the action of the lever 8 and connected parts, the side'ones with a sweeping-pivotal movement and the heel and toe ones with a straight movement.

The last stand 3 comes to rest but the wipers continue to move until the upper has been drafted to its full extent when the wipers pass over the top of the last and hold the edge of the upper firmly upon'the insole whichhas adhesive thereon. After a suitable interval of time, the last stand is released and lowered by the foot lever p when it falls to its initial position. The wipers may then be returned to their outofservice positions by hand by the lever 8 previously referred to. The last can then be removed from the machine.

Our improved machine produces a slipper of good shape and'flexibility in an expeditious manner and with considerable economy of labour. The details of the machine may varied to suit requirements.

Before placing the last upon the stand, the "upper may have a broad india rubber band placed thereon to hold the upper in position over the edge of the insole at the toe and heel so as to prevent puckering. The wipers may be faced with felt, crepe rubber or other material which will grip the material of the upper during drafting or lasting. v

The word drafting as used herein is intended to refer to the operation of lasting and does not refer to the placing of the insole and upper upon the last prior to the latter being placed in the lasting machine.

lVe claim 1. In shoe and slipper lasting machines, in combination, a last, with operative means for raising the same, wiper like elements one for each side and one for each end of the last, operative means for moving said elements towards said last, and means corelating the movements of said last and wipers so that the raising of the last is completed before the inward movement of the wipers is completed.

2. In shoe and slipper lasting machines as claimed in claim 1, wiper like elements 1 each comprising an upper part adjustably secured to the wiper operating means, a lower part shaped to conform to the part of the last against which it bears and guided from the upper part, and compression springs interposed between said parts to tend to hold them apart.

In shoe and slipper lasting machines as 'c'lai'm e'd in claim 1, heel and toe wipers with operative mechanism therefor moving them towards or away from the last with a straight line motion, and side wipers with operative mechanism therefor moving them towards and away from the last with a pivotal circular movement.

4. In shoe and slipper lasting machines as claimed in claim 1, operative means for the last and Wipers comprising a treadle, a connecting rod, a hand lever and toggle levers operated by said treadle to bring the wipers into engagement with the last, a last support, an inclined rack with an inclined edge upon which said support rests, a hooked rod engaged by said treadle and 10 connected to said rack, a stop moving said hooked rod out of engagement with said treadle, and a foot lever connected to said rack for lowering the last, the said hand lever moving the wipers out of their operative position.

In testimony whereof We have signed our names to this specification.

ERNEST TWEEDALE. JOSEPH HENRY NELSON. 

